Automatic machine for loading and screening coal and other material by power.



Al H.AREYNOLDS. AUTOMATIC MACHINE FOR LOADING AND SCREENING COAL ANDOTHER MATERIAL BY POWER.

APPLICATION FILED NOV- I0, I9I3. 1,138,790. Patented May 11, 191".

2 SHEETS-SHEET l.

THE NDRRIS PETERS CO.. PHOTO-LITHC.. WASHINGTON. D. C.

o A. H. REYNOLDS. I

AUTOMATIC MACHINE FOR LOADING AND SCREENING COAL AND OTHER MATERIAL BYPOWER.

APPLICATION FILED NOV. IO, I9I3. 1,138,790.

Patented May 11, 1915.

2 SHEETS-SHEET 2.

s f f E i, H l' w. www A.IIIIIIIIIIIIIII *I NI IIIfl/ I f A n vGMM/huwen '1E NURRIS PETERS CD.. PH0TCHJTHO.4 WASHINGTON, D4 C.

UNITED STATES PATENT OFFICE.

ALBERT H. REYNOLDS, OF LONDON, ONTARIO, CANADA.

AUTOMATIC MACHINE FOR LOADING AND SCREENING COAL AND OTHER MATERIAL BYPOWER.

Lisseo.

Specicaton Of Letters Patent.

Patented May 11, 1915.

Application led November 10, 1913. Serial No. 800,240.

T0 all whom 'it may concern Be it known that I, ALBERT H. REYNOLDS, asubject of the King of Great Britain, and a resident of the city ofLondon, in the county of Middlesex, in the Province of Ontario, Canada,have invented an Automatic Machine for Loading and Screening Coal andOther Material by Power, of which the following is a specification.

My invention relates to an automatic machine for loading and screeningcoal and the like by power, and hasas its" principal object, anapparatus which may be economically constructed and which will rapidlyand cheaply screen materials such as coal and the like. Y

A further Object of my invention is to provide a cheap but eflicientform of elevator for use in connection with the screening apparatus.

In the accompanying drawingz-Figure 1 is a perspective view of ascreening apparatus made according to my invention. Fig. 2 is a sideelevation of the device shown in Fig. 1, illustrating the manner inwhich the elevator bucket takes up material. Fig. 3 is a detail viewshowing the elevator bucket and its relation to conveyer chain andsprocket wheel.

In the separate views the same part is designated by the same referencecharacter.

Referring more particularly to the drawing, 1 represents a frameprovided with a platform 2 which is mounted on suitable pairs of Wheelssuch as 3-3. As best shown in Fig. 2, the frame 1 carries on theunderside thereof a motor 4 which might be of any preferred type, eitherelectric or Otherwise, and which is preferably geared to drive thewheels 3 shown at the right of Fig. 2. The motor 4 is connected also toa shaft 5 which is provided with suitable gearing, not shown, by whichit guides the shaft G, which extends transversely beneath the frame 1.However, it will be understood that it is not necessary to my inventionthat the frame 1 be motor driven, or that the shaft 5 be driven from amotor carried by the frame. Any suitable means for rotating the shaft 5may be used.

At one end of the shaft 6 is a sprocket wheel 7 around which runs asprocket chain 8 which drives a second wheel 9 journaled at the upperend of a pair of arms 10 which form a part of a framework 11 carried atand which are fastened at their Outer ends' to curved levers such as16-16 by which the position of the frame 14 can be adjusted around shaft12 as an axis. Any suitable arrangement may be used for operating thelevers16, and I have shown for this purpose a pair of cords 17-17 whichpass around pulleys 18 suitably mounted on the sides of the frame 11 andthence are carried to drums 19, there being a pair of such drums, one oneach side of the frame 11 which are shownas operated by la common crankor lever 20.

At its outer or lower end the frame 14 carries a shaft 21 on which ismounted a sprocket wheel 22 around which and the wheel 13 the conveyerchain 23 is adapted to run. The chain 23 is shown as carrying twobuckets 24, although more may be used if so desired. It will be noted,moreover, that the wheels 13 and 22 are set centrally with respect'totheir shafts and that there is only one chain for supporting andelevating the buckets.

As clearly shown in Fig. 3, each bucket comprises a relatively long,relatively shallow portion such as 25, the under surface of which isrigidly attached to a shoe or plate 26, the plate 26 being provided witha pair of lugs 27 by which the buckets 24 are pivotally connected to thechain 23. It will be understood that the upper end of the bucket shownin Fig. 3 serves as the discharge end, while the lower end is providedwith a cutter plate such as 28 which is riveted to the upstanding edgesof the portion 25, and which forms a pocket at one end of the bucket inwhich the majority of the material will collect and be transported. Itwill be seen that the cutter plate 28 is of a somewhat quadred shape inside elevation, and it will be apparent from Fig. 2 that the bucket isadapted to dig through a pile of material either from the ground upwardor from the top downward until it has taken a section out of the pile.It will be seen that the sides 25 extend forward of the bottom of thebucket and have downwardly-inclined points. These forward portions andthe points coperate to rst cut side channels in the material to beremoved. It will be obvious also that the bucket being carried by asingle central chain to which it is piv'- otally secured and whichextends on each side of the chain, acts as a shield and prevents thematerials from coming into contact with the sprocket and wheel as thebucket is gathering up its load. It will be seen that the bucket restson the top ofthe chain while carrying its load and that the bucket is soconstructed that a change in the position of the elevator as a wholedoes not interfere with the latter safely and securely carrying the coalor other material when loaded.

It will be obvious that when the bucket passes over the upper sprocketwheel that its load will be poured out of the open end of the bucket.Consequently, for screening purposes I have arranged a screen 29 onwhich the material falls from the bucket. The screen 29 is carried by aframe 30 which is pivoted on a rod 31 which extends between the arms 10.My purpose for mak-- ing the screen adjustable is that it may be changedto handle material which present different conditions as to moisture orshape. Intermediate the ends of the frame 30 I provide a gate 81 whichis adapted to prevent the material from passing down the screen when sodesired.

At the lower end of the frame 30 I provide a second gate such as 38 forconvenience in bagging the material if so desired.

As shown in lFig. l, the platform 2 is cutaway under the screen 29 sothat the ine and undesirable material may fall onto the ground. Ifdesired, however, this may be caught in any convenient manner.

It will be understood that the screen 29 is not permanently fixed to theframe 30 but may be changed so as to have a different lneshed screen forhandling different sizes of material. Y

Having thus described my invention, what I claim is:

l. In a screening apparatus, a bucket having an elongated chute portionadapted to rest on an elevator chain and a cutting plate adapted toforce its way into the material to be elevated and forming a pocket forthe retention of the same, said bucket further having sides projectingforwardly of the cutting plate and provided with downwardly turnedpoints, and attaching lugs on said bucket adapted to secure the bucketto a chain.

2. In a screening apparatus, a bucket having an elongated chute portionadapted to rest on an elevator chain and a cutting plate adapted toforce its weight into the material to be elevated and forming a pocketfor the retention of the same, said bucket further having sidesprojecting forwardly of the cutting plate and provided with downwardlyturned points, and attaching lugs on said bucket adapted to secure thebucket to a chain, said lugs being arranged adjacent the forward end ofthe chute portion and remote from the said points.

In testimony whereof, I have signed in the presence of the twoundersigned witncsses:

ALBERT II. REYNOLDS.

Vitnesses P. J. EDMUNDS, E. A. BEDFORD.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Fatents,

Washington, D. C.

